Stage Cue Controller is the main hub of the Stage Cue system. It acts as the switch board and broadcaster, sending cue information to users connected with the Stage Cue Client app.

When connected to the same WiFi network, Clients can automatically connect to any Controllers that have started on the network. After connecting, Clients will be able to pick a channel to receive data (eg. Electricians, Curtains, or Spots), and as set up by the Controller, will receive cue information along with a color signal. The Controller app has a cue list that the user can step through to run a show, sending different colors to each channel.